Octasulfur

Octasulfur
Stereo, skeletal formula of octathiocane	Spacefill model of octathiocane
	Ball and stick model of octathiocane
	Sample of pulverised octasulfur
Names
	Systematic IUPAC name cyclo-Octasulfur; Octathiocane; Cyclooctasulfane;
	Other names Octasulfur
Identifiers
CAS Number	10544-50-0 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:29385;
ChEMBL	ChEMBL1235452 ;
ChemSpider	59726 ;
Gmelin Reference	2973
MeSH	Cyclooctasulfur
PubChem CID	66348;
UNII	70FD1KFU70 ;
CompTox Dashboard (EPA)	DTXSID80872924 ;
	InChI InChI=1S/S8/c1-2-4-6-8-7-5-3-1 Key: JLQNHALFVCURHW-UHFFFAOYSA-N ;
	SMILES S1SSSSSSS1;
Properties
Chemical formula	S8
Molar mass	256.48 g·mol−1
Appearance	Vivid, yellow, translucent crystals
Density	2.07 g/cm3
Melting point	119 °C; 246 °F; 392 K
Boiling point	444.6 °C; 832.4 °F; 717.8 K
log P	6.117
Thermochemistry
Std molar; entropy (S⦵298)	32 J·mol−1·K−1
Std enthalpy of; formation (ΔfH⦵298)	0 kJ/mol
Related compounds
Related compounds	Hexathiane; Octasulfur monoxide; Heptasulfur imide; Selenium hexasulfide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Octasulfur is an inorganic substance with the chemical formula S₈. It is an odourless and tasteless yellow solid, and is a major industrial chemical. It is the most common allotrope of sulfur and occurs widely in nature.